The Visitor design pattern is a GOF (Gang of Four) pattern and can be used to define a new operation on your class sans the need of changing the existing code. GOF patterns are classified into ...

The GoF Design Patterns published in 1998 qualifies as a classic still being taught in universities and recommended as best practice in the industry. In his deep dive session from Devoxx, Venkat Subra ...

Once written, Nutella's algorithm would combine various patterns and colors for each design on its own and then give each a customized ID code to ensure no two labels were alike.